Viewing archive of Sunday, 18 October 2015 - Sunspot regions

It appears that the image of the visible solar disk for this day in history is missing.
Sunspot number New regionsBackground fluxMaximum fluxC
81 -21B7.29C2.73

Sunspot regions

Region 12431

Number of
sunspots
Size Class Magn. Class Spot Location
3 2 20 CSO S18W19
HMIIF
HMIBC

Region 12432

Number of
sunspots
Size Class Magn. Class Spot Location
3 -1 10 BXO S21W38
HMIIF
HMIBC

Region 12434

Number of
sunspots
Size Class Magn. Class Spot Location
20 -2 260 110 DKI S10E20
HMIIF
HMIBC

Region 12435

Number of
sunspots
Size Class Magn. Class Spot Location
1 30 10 HAX S15E60
HMIIF
HMIBC

Region 12436

Number of
sunspots
Size Class Magn. Class Spot Location
6 80 DAI N09E71
HMIIF
HMIBC

Solar flares on this day

C2.15 C1.93

All times in UTC

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Space weather facts

Last X-flare2026/02/04X4.21
Last M-flare2026/02/25M2.4
Last geomagnetic storm2026/03/03Kp5 (G1)
Spotless days
Last 365 days3 days
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Monthly mean Sunspot Number
February 202678.2 -34.3
March 202674.8 -3.4
Last 30 days53.3 -74.6

This day in history*

Solar flares
12012X1.22
22001M9.58
32015M7.43
42024M7.4
52002M3.28
DstG
11957-177G3
21979-140G3
31961-131G3
41998-116G3
51989-101
*since 1994

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